The iSIC-CB contains the iSIC data logger in an enclosure that provides a watertight seal over the data well of NexSens CB-series data buoys. The top of the iSIC-CB enclosure has a series of UW ports for connection of solar panels, sensors, communication devices, and external power supplies to the iSIC. The available ports and functions are:

(5) SENSOR (P0/P1/P2): NexSens sensorBUS architecture includes wiring for SDI-12, RS- 232 and RS-485 devices. For compatibility, sensors must have a factory-installed UW plug connector. The sensor ports are wired as follows: